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#ifndef _IPXE_SPCR_H
#define _IPXE_SPCR_H
/** @file
*
* ACPI Serial Port Console Redirection (SPCR)
*
*/
FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
#include <stdint.h>
#include <ipxe/acpi.h>
/** Serial Port Console Redirection table signature */
#define SPCR_SIGNATURE ACPI_SIGNATURE ( 'S', 'P', 'C', 'R' )
/** A Serial Port Console Redirection table */
struct spcr_table {
/** ACPI header */
struct acpi_header acpi;
/** Interface type */
uint8_t type;
/** Reserved */
uint8_t reserved_a[3];
/** Base address */
struct acpi_address base;
/** Reserved */
uint8_t reserved_b[6];
/** Baud rate
*
* 0: leave unchanged
* 1: 2400 = 115200 / 48 (not defined in standard)
* 2: 4800 = 115200 / 24 (not defined in standard)
* 3: 9600 = 115200 / 12
* 4: 19200 = 115200 / 6
* 5: 38400 = 115200 / 3 (not defined in standard)
* 6: 57600 = 115200 / 2
* 7: 115200 = 115200 / 1
*/
uint8_t baud;
/** Parity */
uint8_t parity;
/** Stop bits */
uint8_t stop;
/** Flow control */
uint8_t flow;
/** Terminal type */
uint8_t terminal;
/** Language */
uint8_t lang;
/** PCI device ID */
uint16_t pci_device_id;
/** PCI vendor ID */
uint16_t pci_vendor_id;
/** PCI bus number */
uint8_t pci_bus;
/** PCI device number */
uint8_t pci_dev;
/** PCI function number */
uint8_t pci_func;
/** Reserved */
uint8_t reserved_c[4];
/** PCI segment */
uint8_t pci_segment;
/** Clock frequency */
uint32_t clock;
/** Precise baud rate */
uint32_t precise;
/** Reserved */
uint8_t reserved_d[4];
} __attribute__ (( packed ));
/* SPCR interface types */
#define SPCR_TYPE_16550 0x0000 /**< 16550-compatible */
#define SPCR_TYPE_16450 0x0001 /**< 16450-compatible */
#define SPCR_TYPE_16550_GAS 0x0012 /**< 16550-compatible */
/** SPCR baud rates */
enum spcr_baud {
SPCR_BAUD_2400 = 1,
SPCR_BAUD_4800 = 2,
SPCR_BAUD_9600 = 3,
SPCR_BAUD_19200 = 4,
SPCR_BAUD_38400 = 5,
SPCR_BAUD_57600 = 6,
SPCR_BAUD_115200 = 7,
SPCR_BAUD_MAX
};
#endif /* _IPXE_SPCR_H */
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